Patents Assigned to Chemetals Incorporated
  • Preparation of manganite, MnOOH
    Patent number: 4450148
    Abstract: A process of preparing manganite, MnOOH, from an aqueous manganese (II) nitrite solution by a fast batch decomposition in the presence of an "active" solid surface.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: May 22, 1984
    Assignee: Chemetals Incorporated
    Inventor: Jay Y. Welsh
  • Continuous process for the preparation of manganite, MnOOH
    Patent number: 4448760
    Abstract: A process of preparing manganite, MnOOH, from an aqueous manganese (II) nitrite solution by a continuous two-step decomposition process in the presence of an "active" solid surface.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: May 15, 1984
    Assignee: Chemetals Incorporated
    Inventors: Jay Y. Welsh, Denis F. DeCraene, Irving Sochol
  • Preparation of Mn.sub.3 O.sub.4
    Patent number: 4411878
    Abstract: A process of preparing Mn.sub.3 O.sub.4, by the reduction of higher manganese oxides, using methane as a reducing gas under controlled temperatures.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: October 25, 1983
    Assignee: Chemetals Incorporated
    Inventor: Jay Y. Welsh